head to head
vs
Rock Band 2vsSpace Channel 5: Part 2
Rock Band 2 leans Execution (Pure Mechanics); Space Channel 5: Part 2 leans Execution (Practiced Mastery).
Rock Band 2Space Channel 5: Part 2
Axis by axis
Execution8 vs 6
Rock Band 2 leans harder on execution: Guitar, drum, and vocal accuracy on expert charts
Reads0 vs 0
Even - both lean on reads about the same.
Variance0 vs 1
Space Channel 5: Part 2 leans harder on variance: First playthrough hides upcoming commands
Optimization4 vs 4
Even - both lean on optimization about the same.
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.